| From: Josh Boyer <jwboyer@fedoraproject.org> |
| Date: Mon, 11 Nov 2013 08:39:16 -0500 |
| Subject: [PATCH] lib/cpumask: Make CPUMASK_OFFSTACK usable without debug |
| dependency |
| |
| When CPUMASK_OFFSTACK was added in 2008, it was dependent upon |
| DEBUG_PER_CPU_MAPS being enabled, or an architecture could select it. |
| The debug dependency adds additional overhead that isn't required for |
| operation of the feature, and we need CPUMASK_OFFSTACK to increase the |
| NR_CPUS value beyond 512 on x86. We drop the current dependency and make |
| sure SMP is set. |
| |
| Bugzilla: N/A |
| Upstream-status: Nak'd, supposedly replacement coming to auto-select |
| |
| Signed-off-by: Josh Boyer <jwboyer@fedoraproject.org> |
| |
| lib/Kconfig | 3 ++- |
| 1 file changed, 2 insertions(+), 1 deletion(-) |
| |
| diff --git a/lib/Kconfig b/lib/Kconfig |
| index 3a2ef67db6c7..4af1e7e5a611 100644 |
| |
| |
| @@ -396,7 +396,8 @@ config CHECK_SIGNATURE |
| bool |
| |
| config CPUMASK_OFFSTACK |
| - bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS |
| + bool "Force CPU masks off stack" |
| + depends on SMP |
| help |
| Use dynamic allocation for cpumask_var_t, instead of putting |
| them on the stack. This is a bit more expensive, but avoids |